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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001209191-09-045750.txt : 20090925
<SEC-HEADER>0001209191-09-045750.hdr.sgml : 20090925
<ACCEPTANCE-DATETIME>20090925103631
ACCESSION NUMBER:		0001209191-09-045750
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090923
FILED AS OF DATE:		20090925
DATE AS OF CHANGE:		20090925

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NETEZZA CORP
		CENTRAL INDEX KEY:			0001132484
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPUTERS [3571]
		IRS NUMBER:				043527320
		FISCAL YEAR END:			0131

	BUSINESS ADDRESS:	
		STREET 1:		26 FOREST STREET
		CITY:			MARLBOROUGH
		STATE:			MA
		ZIP:			01752
		BUSINESS PHONE:		(508) 382-8200

	MAIL ADDRESS:	
		STREET 1:		26 FOREST STREET
		CITY:			MARLBOROUGH
		STATE:			MA
		ZIP:			01752

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MATRIX PARTNERS VI LP ET AL
		CENTRAL INDEX KEY:			0001103475
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33445
		FILM NUMBER:		091086610

	BUSINESS ADDRESS:	
		STREET 1:		C/O MATRIX PARTNERS
		STREET 2:		1000 WINTER STREET, SUITE 4500
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		781 890 2244

	MAIL ADDRESS:	
		STREET 1:		C/O MATRIX PARTNERS
		STREET 2:		1000 WINTER STREET, SUITE 4500
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

	FORMER NAME:	
		FORMER CONFORMED NAME:	MATRIX PARTNERS VI LP
		DATE OF NAME CHANGE:	20000115
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>c90535_4x0.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-09-23</periodOfReport>

    <issuer>
        <issuerCik>0001132484</issuerCik>
        <issuerName>NETEZZA CORP</issuerName>
        <issuerTradingSymbol>NZ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001103475</rptOwnerCik>
            <rptOwnerName>MATRIX PARTNERS VI LP ET AL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1000 WINTER STREET, SUITE 4500</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WALTHAM</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02451</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-09-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1428000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4279345</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Effective 9/23/09, Matrix Partners VI, L.P. distributed, in-kind and without consideration, a total of 1,428,000 shares of Netezza Corporation to its partners on a pro rata basis.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Timothy A. Barrows, Authorized Member of Matrix VI Management Co., L.L.C., the General Partner of Matrix Partners VI, L.P.</signatureName>
        <signatureDate>2009-09-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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